EM78P569 View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
MFG CO.
'EM78P569' PDF : 58 Pages View PDF
EM78P569
8-bit OTP Micro-controller
VII.9 Code Option
CODE Option Register
13 12 11
10 9 8 7 6 5 4 3 2
1
0
PHO VERSEL 1
MER
/POT0
Bit 0 (/POT0): program ROM protect option.
If set 1 to the bit, program memory can be access; else if clear this bit , program memory can not be
access.
Bit 3(MER) : Memory error recover function
0 disable memory error recover function
1 enable memory error recovery function
If user enable memory error recovery function, MCU will improve effect from environment noise.
Bit 9: This bit must set to 1.
Bit 10(VERSEL) : Version select.
Data RAM address
Data ram address auto-
increase
“ADD” & “SUB”
include “carry“ bit
VERSEL = 0
R8 page1
Not support
Not support
VERSEL = 1
RB page2
Enable
Determined by RA page2 bit7
Bit 11(PHO) : PORTCO status select.
0 PORTC0 defined to normal IO.
1 PORTC0 defined to phase1 output, next figure show the relative of main CLK and Phase1 CLK.
Main CLK
PH1 output
Instruction Cycle
The relative between main CLK and PH1 output
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* This specification is subject to be changed without notice.
45
8/19/2004 V4.4
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